Tu quoque

Tu quoque (Latin for "Thou, also") is an argument that asserts or implies that a certain position is false and/or should be disregarded because its proponent fails to act consistently in accordance with that position. It is an attempt to show that a criticism applies equally to the person making it, and, as such, can be considered an ad hominem argument, since it focuses on the opposite party itself, rather than their position. Examples of this kind of argument can be seem in the Atheism is based on faith and Atheism is a religionapologist attacks on atheism.